He Cracked Reality on Live TV… and a Parallel Universe Appeared

The universe that we see around us is

real, but it's only one small facet of

reality. The whole of reality consists

of many such universes, and they're all

equally real. And we call the whole set

the multiverse. According to quantum

mechanics, all the universes came into

existence, but they were all very alike.

Um and then with the uh interactions

between them interference and other

interactions cause them to become

different.

>> What makes me go into multiple copies in

multiple universes?

>> You already exist in multiple copies.

Initially they are all identical and

then when a moment of choice happens

both a microscopic one and one made by

you consciously um these identical

copies become different from one

another. But why would we need multiple

universes?

>> Suppose you take one of the classic um

experiments of quantum mechanics. Um for

instance, the prediction of the

interference of light. Now I can show

you interference on a simple laser.

I'll show you the experiment.

>> What if the reality we experience were

not the only one?

What if every possibility, every choice

existed at the same time somewhere else?

We have all heard about parallel

universes and alternative realities. For

a long time, these ideas were relegated

to the realm of science fiction and were

barely accepted by the mainstream.

>> Why are we seeing these [ __ ] up

worlds?

>> Because it's a multiverse and anything

that can happen will happen.

But recently with the advancement of

physics they are beginning to be

considered a real possibility and in

fact one of the most plausible.

David Deutsch is one of the scientists

who has taken this idea the furthest. A

theoretical physicist and pioneer of

quantum computing. Deutsch has not only

explored the limits of physics but also

the deepest implications of what reality

means. According to him, what we

perceive as reality is nothing more than

a fraction of something much greater. A

structure where multiple universes

coexist at the same time. This idea has

its origin in the work of Hugh Everett

III, who proposed that each quantum

event does not have a single outcome,

but that all of them occur at the same

time. However, our consciousness in its

ordinary state only experiences one of

them in a linear way. But if this is

true, is there any way to prove it? And

more importantly, what implications does

it have for us? But before getting into

the technical part and seeing the

experiment where according to David

Deutsch these other universes can

interfere with ours in real time, we

need to understand something more. What

the multiverse really is and what

implications it has, why it changes

absolutely everything.

The multiverse theory comes about as an

explanation of the predictions of our

best theory of physics which is quantum

mechanics. Quantum mechanics makes very

accurate predictions, the most accurate

predictions that any theory of physics

has ever made.

But if you want to explain why these

predictions are so, how these physical

events come about, there's no

alternative but to postulate that what

we see around us is not the whole of

reality. That reality is much more

varied and has a great multiplicity.

This is what we call multiple universes.

>> So suppose you're walking in Oxford and

you have to choose to go left or right.

In that case, for instance, it could be

that in half the universes I go left and

in half I go right.

>> And could you say that the universe

splits up as soon as you go left or

right?

>> It's not a matter of splitting. This

this terminology of splitting is uh was

the way that the many universes theory

was originally introduced when they

thought of there being a universe which

then splits into two universes. But

nowadays it's better, we find it better

to think of there being just a certain

number of universes, perhaps an infinite

number already there and then half of

them do one thing and half do another.

What David Deutsch is saying completely

changes the traditional idea of the

multiverse. It's not that the universe

splits every time you make a decision.

It's that all possibilities

already exist. Every choice you make

does not create a new reality. It simply

determines which one you experience.

It's as if all versions of your life are

already laid out and you are simply

moving through them.

This way of understanding reality aligns

with even deeper ideas such as the

holographic universe or even the

possibility that we are living inside a

simulation where all information is

already contained at a more fundamental

level and our conscious experience would

simply be a trajectory a line within

that system. But if this is true, it

means that in some way we could be

existing in multiple realities at the

same time, even if we are only aware of

one. And perhaps that would explain

certain strange phenomena, feelings of

deja vu, premonitions, or even the

impression of having lived other lives.

Many people from different cultures and

backgrounds have claimed to experience

these kinds of phenomena and some have

even dared to speak about them publicly.

We are living in a computer programmed

reality and the only clue we have to it

is when some variable is changed and

some alteration in our reality occurs.

To scientifically prove that such

lateral change processes do occur,

probably all we would have to go on

would be vestigages of memory, fleeting

impressions, dreams, nebulous intuitions

that somehow things have been differed

in some way and not and not long ago,

but now

we might reflexively reach for a light

switch in the bathroom only to discover

that it was always had been in another

place entirely. We might reach for the

air vent in our car where there was no

air vent. A reflex left over from a

previous present still active at a

subcortical level.

>> He is Philip K. Dick whom I talked about

in another video on the channel. He was

a science fiction writer known for works

such as Do Androids Dream of Electric

Sheep, Ubi, and The Man in the High

Castle. Many of his stories gave rise to

films like Bladeunner, Minority Report,

and Total Recall.

But beyond his work, he was deeply

convinced that he had access to other

realities. On one occasion after a

dental procedure in which he was

administered sodium pentathol, he

claimed to have experienced something

extraordinary, the sensation of

consciously living in another reality,

specifically in the time of ancient

Rome. From that moment on, he began to

question the origin of his own ideas. He

believed that his stories did not come

solely from his imagination, but from

leaks from other realities. He even went

so far as to suggest that death, as we

understand it, might not exist. That

instead of disappearing, we simply jump

from one line of reality to another. An

idea that today some relate to what is

known as quantum immortality.

Philillip is just one of many who have

had experiences or beliefs about other

worlds. But now it's time to return to

David Deutsch and his live experiment on

parallel realities.

What is it that forces us to believe in

parallel universes?

I'll show you the experiment. This is

just a piece of cardboard with little

pin prick holes in it. And there's one

of them. Just a single hole. This is a

laser pointer that we use in uh giving

lectures. I shine the laser through the